#include "../globals.h"
#include "mdc2.h"

/* To everybody who want to fix this external openssl dependency bug
 * read this starting at page 5 https://board.streamboard.tv/forum/thread/47678-oscam-bug-report/?pageNo=5
 * Don't touch this if you have no real fix. Right now resolution is can't fix
 */

#undef c2l
#define c2l(c,l)        (l =((DES_LONG)(*((c)++)))    , \
                         l|=((DES_LONG)(*((c)++)))<< 8L, \
                         l|=((DES_LONG)(*((c)++)))<<16L, \
                         l|=((DES_LONG)(*((c)++)))<<24L)

#undef l2c
#define l2c(l,c)        (*((c)++)=(unsigned char)(((l)     )&0xff), \
                        *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
                        *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
                        *((c)++)=(unsigned char)(((l)>>24L)&0xff))

# define FP(l,r) \
        { \
        register DES_LONG tt; \
        PERM_OP(l,r,tt, 1,0x55555555L); \
        PERM_OP(r,l,tt, 8,0x00ff00ffL); \
        PERM_OP(l,r,tt, 2,0x33333333L); \
        PERM_OP(r,l,tt,16,0x0000ffffL); \
        PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
        }


//OPENSSL_GLOBAL const DES_LONG DES_SPtrans[8][64] =
const DES_LONG DES_SPtrans_Oscam[8][64] =
{
	{
		/* nibble 0 */
		0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L,
		0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L,
		0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L,
		0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L,
		0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
		0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L,
		0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L,
		0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L,
		0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L,
		0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
		0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L,
		0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L,
		0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L,
		0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L,
		0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
		0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L,
	},
	{
		/* nibble 1 */
		0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L,
		0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L,
		0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L,
		0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L,
		0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
		0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L,
		0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L,
		0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L,
		0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L,
		0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
		0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L,
		0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L,
		0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L,
		0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L,
		0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
		0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L,
	},
	{
		/* nibble 2 */
		0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L,
		0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L,
		0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L,
		0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L,
		0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
		0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L,
		0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L,
		0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L,
		0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L,
		0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
		0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L,
		0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L,
		0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L,
		0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L,
		0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
		0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L,
	},
	{
		/* nibble 3 */
		0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L,
		0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L,
		0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L,
		0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L,
		0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
		0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L,
		0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L,
		0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L,
		0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L,
		0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
		0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L,
		0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L,
		0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L,
		0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L,
		0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
		0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L,
	},
	{
		/* nibble 4 */
		0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L,
		0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L,
		0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L,
		0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L,
		0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
		0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L,
		0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L,
		0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L,
		0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L,
		0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
		0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L,
		0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L,
		0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L,
		0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L,
		0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
		0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L,
	},
	{
		/* nibble 5 */
		0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L,
		0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L,
		0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L,
		0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L,
		0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
		0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L,
		0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L,
		0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L,
		0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L,
		0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
		0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L,
		0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L,
		0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L,
		0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L,
		0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
		0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L,
	},
	{
		/* nibble 6 */
		0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L,
		0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L,
		0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L,
		0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L,
		0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
		0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L,
		0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L,
		0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L,
		0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L,
		0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
		0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L,
		0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L,
		0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L,
		0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L,
		0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
		0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L,
	},
	{
		/* nibble 7 */
		0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L,
		0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L,
		0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L,
		0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L,
		0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
		0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L,
		0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L,
		0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L,
		0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L,
		0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
		0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L,
		0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L,
		0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L,
		0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L,
		0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
		0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L,
	}
};


#  define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g)
#  define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
        u=R^s[S  ]; \
        t=R^s[S+1]

# define D_ENCRYPT(LL,R,S) { \
        LOAD_DATA_tmp(R,S,u,t,E0,E1); \
        t=ROTATE(t,4); \
        LL^= \
            DES_SPtrans_Oscam[0][(u>> 2L)&0x3f]^ \
            DES_SPtrans_Oscam[2][(u>>10L)&0x3f]^ \
            DES_SPtrans_Oscam[4][(u>>18L)&0x3f]^ \
            DES_SPtrans_Oscam[6][(u>>26L)&0x3f]^ \
            DES_SPtrans_Oscam[1][(t>> 2L)&0x3f]^ \
            DES_SPtrans_Oscam[3][(t>>10L)&0x3f]^ \
            DES_SPtrans_Oscam[5][(t>>18L)&0x3f]^ \
            DES_SPtrans_Oscam[7][(t>>26L)&0x3f]; }

#define IP(l,r) \
        { \
        register DES_LONG tt; \
        PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
        PERM_OP(l,r,tt,16,0x0000ffffL); \
        PERM_OP(r,l,tt, 2,0x33333333L); \
        PERM_OP(l,r,tt, 8,0x00ff00ffL); \
        PERM_OP(r,l,tt, 1,0x55555555L); \
        }

# define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
        (b)^=(t),\
        (a)^=((t)<<(n)))

#  define ROTATE(a,n)     (((a)>>(n))+((a)<<(32-(n))))



static const unsigned char odd_parity[256] =
{
	1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14,
	16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
	32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
	49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
	64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
	81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
	97, 97, 98, 98, 100, 100, 103, 103, 104, 104, 107, 107, 109, 109, 110,
	110,
	112, 112, 115, 115, 117, 117, 118, 118, 121, 121, 122, 122, 124, 124, 127,
	127,
	128, 128, 131, 131, 133, 133, 134, 134, 137, 137, 138, 138, 140, 140, 143,
	143,
	145, 145, 146, 146, 148, 148, 151, 151, 152, 152, 155, 155, 157, 157, 158,
	158,
	161, 161, 162, 162, 164, 164, 167, 167, 168, 168, 171, 171, 173, 173, 174,
	174,
	176, 176, 179, 179, 181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191,
	191,
	193, 193, 194, 194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206,
	206,
	208, 208, 211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223,
	223,
	224, 224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239,
	239,
	241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254,
	254
};

#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
        (a)=(a)^(t)^(t>>(16-(n))))

# define ITERATIONS 16
# define HALF_ITERATIONS 8

static const DES_LONG des_skb[8][64] =
{
	{
		/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
		0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L,
		0x00010000L, 0x00010010L, 0x20010000L, 0x20010010L,
		0x00000800L, 0x00000810L, 0x20000800L, 0x20000810L,
		0x00010800L, 0x00010810L, 0x20010800L, 0x20010810L,
		0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L,
		0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L,
		0x00000820L, 0x00000830L, 0x20000820L, 0x20000830L,
		0x00010820L, 0x00010830L, 0x20010820L, 0x20010830L,
		0x00080000L, 0x00080010L, 0x20080000L, 0x20080010L,
		0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L,
		0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L,
		0x00090800L, 0x00090810L, 0x20090800L, 0x20090810L,
		0x00080020L, 0x00080030L, 0x20080020L, 0x20080030L,
		0x00090020L, 0x00090030L, 0x20090020L, 0x20090030L,
		0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L,
		0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L,
	},
	{
		/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
		0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L,
		0x00200000L, 0x02200000L, 0x00202000L, 0x02202000L,
		0x00000004L, 0x02000004L, 0x00002004L, 0x02002004L,
		0x00200004L, 0x02200004L, 0x00202004L, 0x02202004L,
		0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L,
		0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L,
		0x00000404L, 0x02000404L, 0x00002404L, 0x02002404L,
		0x00200404L, 0x02200404L, 0x00202404L, 0x02202404L,
		0x10000000L, 0x12000000L, 0x10002000L, 0x12002000L,
		0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L,
		0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L,
		0x10200004L, 0x12200004L, 0x10202004L, 0x12202004L,
		0x10000400L, 0x12000400L, 0x10002400L, 0x12002400L,
		0x10200400L, 0x12200400L, 0x10202400L, 0x12202400L,
		0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L,
		0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L,
	},
	{
		/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
		0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L,
		0x01000000L, 0x01000001L, 0x01040000L, 0x01040001L,
		0x00000002L, 0x00000003L, 0x00040002L, 0x00040003L,
		0x01000002L, 0x01000003L, 0x01040002L, 0x01040003L,
		0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L,
		0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L,
		0x00000202L, 0x00000203L, 0x00040202L, 0x00040203L,
		0x01000202L, 0x01000203L, 0x01040202L, 0x01040203L,
		0x08000000L, 0x08000001L, 0x08040000L, 0x08040001L,
		0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L,
		0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L,
		0x09000002L, 0x09000003L, 0x09040002L, 0x09040003L,
		0x08000200L, 0x08000201L, 0x08040200L, 0x08040201L,
		0x09000200L, 0x09000201L, 0x09040200L, 0x09040201L,
		0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L,
		0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L,
	},
	{
		/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
		0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L,
		0x00000008L, 0x00100008L, 0x00000108L, 0x00100108L,
		0x00001000L, 0x00101000L, 0x00001100L, 0x00101100L,
		0x00001008L, 0x00101008L, 0x00001108L, 0x00101108L,
		0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L,
		0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L,
		0x04001000L, 0x04101000L, 0x04001100L, 0x04101100L,
		0x04001008L, 0x04101008L, 0x04001108L, 0x04101108L,
		0x00020000L, 0x00120000L, 0x00020100L, 0x00120100L,
		0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L,
		0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L,
		0x00021008L, 0x00121008L, 0x00021108L, 0x00121108L,
		0x04020000L, 0x04120000L, 0x04020100L, 0x04120100L,
		0x04020008L, 0x04120008L, 0x04020108L, 0x04120108L,
		0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L,
		0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
		0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L,
		0x00000004L, 0x10000004L, 0x00010004L, 0x10010004L,
		0x20000000L, 0x30000000L, 0x20010000L, 0x30010000L,
		0x20000004L, 0x30000004L, 0x20010004L, 0x30010004L,
		0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L,
		0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L,
		0x20100000L, 0x30100000L, 0x20110000L, 0x30110000L,
		0x20100004L, 0x30100004L, 0x20110004L, 0x30110004L,
		0x00001000L, 0x10001000L, 0x00011000L, 0x10011000L,
		0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L,
		0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L,
		0x20001004L, 0x30001004L, 0x20011004L, 0x30011004L,
		0x00101000L, 0x10101000L, 0x00111000L, 0x10111000L,
		0x00101004L, 0x10101004L, 0x00111004L, 0x10111004L,
		0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L,
		0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
		0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L,
		0x00000400L, 0x08000400L, 0x00000408L, 0x08000408L,
		0x00020000L, 0x08020000L, 0x00020008L, 0x08020008L,
		0x00020400L, 0x08020400L, 0x00020408L, 0x08020408L,
		0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L,
		0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L,
		0x00020001L, 0x08020001L, 0x00020009L, 0x08020009L,
		0x00020401L, 0x08020401L, 0x00020409L, 0x08020409L,
		0x02000000L, 0x0A000000L, 0x02000008L, 0x0A000008L,
		0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L,
		0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L,
		0x02020400L, 0x0A020400L, 0x02020408L, 0x0A020408L,
		0x02000001L, 0x0A000001L, 0x02000009L, 0x0A000009L,
		0x02000401L, 0x0A000401L, 0x02000409L, 0x0A000409L,
		0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L,
		0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
		0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L,
		0x01000000L, 0x01000100L, 0x01080000L, 0x01080100L,
		0x00000010L, 0x00000110L, 0x00080010L, 0x00080110L,
		0x01000010L, 0x01000110L, 0x01080010L, 0x01080110L,
		0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L,
		0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L,
		0x00200010L, 0x00200110L, 0x00280010L, 0x00280110L,
		0x01200010L, 0x01200110L, 0x01280010L, 0x01280110L,
		0x00000200L, 0x00000300L, 0x00080200L, 0x00080300L,
		0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L,
		0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L,
		0x01000210L, 0x01000310L, 0x01080210L, 0x01080310L,
		0x00200200L, 0x00200300L, 0x00280200L, 0x00280300L,
		0x01200200L, 0x01200300L, 0x01280200L, 0x01280300L,
		0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L,
		0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
		0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L,
		0x00000002L, 0x04000002L, 0x00040002L, 0x04040002L,
		0x00002000L, 0x04002000L, 0x00042000L, 0x04042000L,
		0x00002002L, 0x04002002L, 0x00042002L, 0x04042002L,
		0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L,
		0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L,
		0x00002020L, 0x04002020L, 0x00042020L, 0x04042020L,
		0x00002022L, 0x04002022L, 0x00042022L, 0x04042022L,
		0x00000800L, 0x04000800L, 0x00040800L, 0x04040800L,
		0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L,
		0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L,
		0x00002802L, 0x04002802L, 0x00042802L, 0x04042802L,
		0x00000820L, 0x04000820L, 0x00040820L, 0x04040820L,
		0x00000822L, 0x04000822L, 0x00040822L, 0x04040822L,
		0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L,
		0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L,
	}
};

void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule)
{
	static const int shifts2[16] =
	{ 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0 };
	register DES_LONG c, d, t, s, t2;
	register const unsigned char *in;
	register DES_LONG *k;
	register int i;

#ifdef OPENBSD_DEV_CRYPTO
	memcpy(schedule->key, key, sizeof schedule->key);
	schedule->session = NULL;
#endif
	k = &schedule->ks->deslong[0];
	in = &(*key)[0];

	c2l(in, c);
	c2l(in, d);

	/*
	 * do PC1 in 47 simple operations :-) Thanks to John Fletcher
	 * (john_fletcher@lccmail.ocf.llnl.gov) for the inspiration. :-)
	 */
	PERM_OP(d, c, t, 4, 0x0f0f0f0fL);
	HPERM_OP(c, t, -2, 0xcccc0000L);
	HPERM_OP(d, t, -2, 0xcccc0000L);
	PERM_OP(d, c, t, 1, 0x55555555L);
	PERM_OP(c, d, t, 8, 0x00ff00ffL);
	PERM_OP(d, c, t, 1, 0x55555555L);
	d = (((d & 0x000000ffL) << 16L) | (d & 0x0000ff00L) |
		 ((d & 0x00ff0000L) >> 16L) | ((c & 0xf0000000L) >> 4L));
	c &= 0x0fffffffL;

	for (i = 0; i < ITERATIONS; i++)
	{
		if (shifts2[i])
		{
			c = ((c >> 2L) | (c << 26L));
			d = ((d >> 2L) | (d << 26L));
		}
		else
		{
			c = ((c >> 1L) | (c << 27L));
			d = ((d >> 1L) | (d << 27L));
		}
		c &= 0x0fffffffL;
		d &= 0x0fffffffL;
		/*
		 * could be a few less shifts but I am to lazy at this point in time
		 * to investigate
		 */
		s = des_skb[0][(c) & 0x3f] |
			des_skb[1][((c >> 6L) & 0x03) | ((c >> 7L) & 0x3c)] |
			des_skb[2][((c >> 13L) & 0x0f) | ((c >> 14L) & 0x30)] |
			des_skb[3][((c >> 20L) & 0x01) | ((c >> 21L) & 0x06) |
					   ((c >> 22L) & 0x38)];
		t = des_skb[4][(d) & 0x3f] |
			des_skb[5][((d >> 7L) & 0x03) | ((d >> 8L) & 0x3c)] |
			des_skb[6][(d >> 15L) & 0x3f] |
			des_skb[7][((d >> 21L) & 0x0f) | ((d >> 22L) & 0x30)];

		/* table contained 0213 4657 */
		t2 = ((t << 16L) | (s & 0x0000ffffL)) & 0xffffffffL;
		*(k++) = ROTATE(t2, 30) & 0xffffffffL;

		t2 = ((s >> 16L) | (t & 0xffff0000L));
		*(k++) = ROTATE(t2, 26) & 0xffffffffL;
	}
}

void DES_set_odd_parity(DES_cblock *key)
{
	unsigned int i;

	for (i = 0; i < DES_KEY_SZ; i++)
		(*key)[i] = odd_parity[(*key)[i]];
}


void DES_encrypt1_Oscam(DES_LONG *data, DES_key_schedule *ks, int enc)
{
	register DES_LONG l=0, r=0, t=0, u=0;
	//l = r = t = u = 0;

	register DES_LONG *s;

	r = data[0];
	l = data[1];

	IP(r, l);
	/*
	 * Things have been modified so that the initial rotate is done outside
	 * the loop.  This required the DES_SPtrans values in sp.h to be rotated
	 * 1 bit to the right. One perl script later and things have a 5% speed
	 * up on a sparc2. Thanks to Richard Outerbridge
	 * <71755.204@CompuServe.COM> for pointing this out.
	 */
	/* clear the top bits on machines with 8byte longs */
	/* shift left by 2 */
	r = ROTATE(r, 29) & 0xffffffffL;
	l = ROTATE(l, 29) & 0xffffffffL;

	s = ks->ks->deslong;
	/*
	 * I don't know if it is worth the effort of loop unrolling the inner
	 * loop
	 */
	if (enc)
	{
		D_ENCRYPT(l, r, 0);     /* 1 */
		D_ENCRYPT(r, l, 2);     /* 2 */
		D_ENCRYPT(l, r, 4);     /* 3 */
		D_ENCRYPT(r, l, 6);     /* 4 */
		D_ENCRYPT(l, r, 8);     /* 5 */
		D_ENCRYPT(r, l, 10);    /* 6 */
		D_ENCRYPT(l, r, 12);    /* 7 */
		D_ENCRYPT(r, l, 14);    /* 8 */
		D_ENCRYPT(l, r, 16);    /* 9 */
		D_ENCRYPT(r, l, 18);    /* 10 */
		D_ENCRYPT(l, r, 20);    /* 11 */
		D_ENCRYPT(r, l, 22);    /* 12 */
		D_ENCRYPT(l, r, 24);    /* 13 */
		D_ENCRYPT(r, l, 26);    /* 14 */
		D_ENCRYPT(l, r, 28);    /* 15 */
		D_ENCRYPT(r, l, 30);    /* 16 */
	}
	else
	{
		D_ENCRYPT(l, r, 30);    /* 16 */
		D_ENCRYPT(r, l, 28);    /* 15 */
		D_ENCRYPT(l, r, 26);    /* 14 */
		D_ENCRYPT(r, l, 24);    /* 13 */
		D_ENCRYPT(l, r, 22);    /* 12 */
		D_ENCRYPT(r, l, 20);    /* 11 */
		D_ENCRYPT(l, r, 18);    /* 10 */
		D_ENCRYPT(r, l, 16);    /* 9 */
		D_ENCRYPT(l, r, 14);    /* 8 */
		D_ENCRYPT(r, l, 12);    /* 7 */
		D_ENCRYPT(l, r, 10);    /* 6 */
		D_ENCRYPT(r, l, 8);     /* 5 */
		D_ENCRYPT(l, r, 6);     /* 4 */
		D_ENCRYPT(r, l, 4);     /* 3 */
		D_ENCRYPT(l, r, 2);     /* 2 */
		D_ENCRYPT(r, l, 0);     /* 1 */
	}

	/* rotate and clear the top bits on machines with 8byte longs */
	l = ROTATE(l, 3) & 0xffffffffL;
	r = ROTATE(r, 3) & 0xffffffffL;

	FP(r, l);
	data[0] = l;
	data[1] = r;
}


static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len);
int MDC2_Init(MDC2_CTX *c)
{
	c->num = 0;
	c->pad_type = 1;
	memset(&(c->h[0]), 0x52, MDC2_BLOCK);
	memset(&(c->hh[0]), 0x25, MDC2_BLOCK);
	return 1;
}

int MDC2_Update(MDC2_CTX *c, const unsigned char *in, size_t len)
{
	size_t i, j;

	i = c->num;
	if (i != 0)
	{
		if (len < MDC2_BLOCK - i)
		{
			/* partial block */
			memcpy(&(c->data[i]), in, len);
			c->num += (int)len;
			return 1;
		}
		else
		{
			/* filled one */
			j = MDC2_BLOCK - i;
			memcpy(&(c->data[i]), in, j);
			len -= j;
			in += j;
			c->num = 0;
			mdc2_body(c, &(c->data[0]), MDC2_BLOCK);
		}
	}
	i = len & ~((size_t)MDC2_BLOCK - 1);
	if (i > 0)
		mdc2_body(c, in, i);
	j = len - i;
	if (j > 0)
	{
		memcpy(&(c->data[0]), &(in[i]), j);
		c->num = (int)j;
	}
	return 1;
}

static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len)
{
	register DES_LONG tin0, tin1;
	register DES_LONG ttin0, ttin1;
	DES_LONG d[2], dd[2];
	DES_key_schedule k;
	unsigned char *p;
	size_t i;

	for (i = 0; i < len; i += 8)
	{
		c2l(in, tin0);
		d[0] = dd[0] = tin0;
		c2l(in, tin1);
		d[1] = dd[1] = tin1;
		c->h[0] = (c->h[0] & 0x9f) | 0x40;
		c->hh[0] = (c->hh[0] & 0x9f) | 0x20;

		DES_set_odd_parity(&c->h);
		DES_set_key_unchecked(&c->h, &k);
		DES_encrypt1_Oscam(d, &k, 1);

		DES_set_odd_parity(&c->hh);
		DES_set_key_unchecked(&c->hh, &k);
		DES_encrypt1_Oscam(dd, &k, 1);

		ttin0 = tin0 ^ dd[0];
		ttin1 = tin1 ^ dd[1];
		tin0 ^= d[0];
		tin1 ^= d[1];

		p = c->h;
		l2c(tin0, p);
		l2c(ttin1, p);
		p = c->hh;
		l2c(ttin0, p);
		l2c(tin1, p);
	}
}

int MDC2_Final(unsigned char *md, MDC2_CTX *c)
{
	unsigned int i;
	int j;

	i = c->num;
	j = c->pad_type;
	if ((i > 0) || (j == 2))
	{
		if (j == 2)
			c->data[i++] = 0x80;
		memset(&(c->data[i]), 0, MDC2_BLOCK - i);
		mdc2_body(c, c->data, MDC2_BLOCK);
	}
	memcpy(md, (char *)c->h, MDC2_BLOCK);
	memcpy(&(md[MDC2_BLOCK]), (char *)c->hh, MDC2_BLOCK);
	return 1;
}
